How long do high bay LED lights last?

High bay LED lights typically last between 50.000 and 100.000 hours, depending on the driver quality, thermal management, and operating environment. That’s 5 to 10 years of continuous use, or 10 to 20 years in a warehouse running 12 hours a day. The key is the L70 rating—that’s when brightness drops to 70% of original output, not when the light fails completely. Cheap fixtures might hit 30.000 hours; well-built ones from trusted brands easily push past 80.000. Heat is the real killer—keep the housing cool and the driver ventilated, and you’ll see the high end of that range.

In practice, most users replace them not because they burn out, but because the lumen output gradually fades or the driver gives up around year eight. Unlike old metal halides that die suddenly, LEDs just get dimmer over time. If you run them 24/7 in a hot, dusty factory, plan on a 7–8 year lifespan. In a climate-controlled space with intermittent use, expect well over a decade. Bottom line: good high bays outlast most building leases, but the driver is usually the first to go—so check warranty terms. Five years is standard; ten means the manufacturer actually stands behind it.